1 янв 1891 г. - Hans Dreisch split a fertilized sea urchin egg which was at the two-cell division stage by hand. Each cell subsequently developed into two small but identical sea urchin larva.
Описание:
His research was carried on by Hans Spemann in Germany and Ross Harrison in the US.Добавлено на ленту времени:
Дата:
1 янв 1891 г.
Сейчас
~ 133 г назад
